Get all your news in one place.
100's of premium titles.
One app.
Start reading
Los Angeles Times
Los Angeles Times
National
Rong-Gong Lin II and Luke Money

Ultra-contagious BA.4, BA.5 subvariants fuel coronavirus spread across much of California

LOS ANGELES — In a sign of how the new coronavirus wave continues to spread across California, two-thirds of the state’s counties are now in the high COVID-19 community level, in which the U.S. Centers for Disease Control and Prevention recommends universal masking in indoor public spaces.

This comes as health officials are warning of concerning weeks ahead as two new ultra-contagious omicron subvariants — BA.4 and BA.5 — spread. Experts believe the subvariants, which are are not only especially contagious but also capable of reinfecting those who have survived earlier omicron infection, are a major factor behind the continued persistence of coronavirus transmission across California.

So far, Los Angeles County health officials have not imposed new masking rules. But they have warned that might be necessary, perhaps later in July, if new coronavirus-positive hospitalizations continue to rise. Though experts are concerned, there is still uncertainty about how serious a summer wave will get.

Sign up to read this article
Read news from 100's of titles, curated specifically for you.
Already a member? Sign in here
Related Stories
Top stories on inkl right now
One subscription that gives you access to news from hundreds of sites
Already a member? Sign in here
Our Picks
Fourteen days free
Download the app
One app. One membership.
100+ trusted global sources.